/*
Copyright 2022 The Matrix.org Foundation C.I.C.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

import request from 'browser-request';
import { UpdateCheckStatus } from 'matrix-react-sdk/src/BasePlatform';
import { MatrixClientPeg } from 'matrix-react-sdk/src/MatrixClientPeg';

import WebPlatform from '../../../../src/vector/platform/WebPlatform';

describe('WebPlatform', () => {
    beforeEach(() => {
        jest.clearAllMocks();
    });

    it('returns human readable name', () => {
        const platform = new WebPlatform();
        expect(platform.getHumanReadableName()).toEqual('Web Platform');
    });

    it('registers service worker', () => {
        // @ts-ignore - mocking readonly object
        navigator.serviceWorker = { register: jest.fn() };
        new WebPlatform();
        expect(navigator.serviceWorker.register).toHaveBeenCalled();
    });

    describe('notification support', () => {
        const mockNotification = {
            requestPermission: jest.fn(),
            permission: 'notGranted',
        }
        beforeEach(() => {
            // @ts-ignore
            window.Notification = mockNotification;
            mockNotification.permission = 'notGranted';
        });

        it('supportsNotifications returns false when platform does not support notifications', () => {
            // @ts-ignore
            window.Notification = undefined;
            expect(new WebPlatform().supportsNotifications()).toBe(false);
        });

        it('supportsNotifications returns true when platform supports notifications', () => {
            expect(new WebPlatform().supportsNotifications()).toBe(true);
        });

        it('maySendNotifications returns true when notification permissions are not granted', () => {
            expect(new WebPlatform().maySendNotifications()).toBe(false);
        });

        it('maySendNotifications returns true when notification permissions are granted', () => {
            mockNotification.permission = 'granted'
            expect(new WebPlatform().maySendNotifications()).toBe(true);
        });

        it('requests notification permissions and returns result ', async () => {
            mockNotification.requestPermission.mockImplementation(callback => callback('test'));

            const platform = new WebPlatform();
            const result = await platform.requestNotificationPermission();
            expect(result).toEqual('test');
        });

    });

    describe('app version', () => {
        const envVersion = process.env.VERSION;
        const prodVersion = '1.10.13';

        const setRequestMockImplementation = (err?: unknown, response?: { status: number }, body?: string) =>
            request.mockImplementation((_opts, callback) => callback(err, response, body));

        beforeEach(() => {
            jest.spyOn(MatrixClientPeg, 'userRegisteredWithinLastHours').mockReturnValue(false);
        })

        afterAll(() => {
            process.env.VERSION = envVersion;
        });

        it('should return true from canSelfUpdate()', async () => {
            const platform = new WebPlatform();
            const result = await platform.canSelfUpdate();
            expect(result).toBe(true);
        });

        it('getAppVersion returns normalized app version', async () => {
            process.env.VERSION = prodVersion;
            const platform = new WebPlatform();

            const version = await platform.getAppVersion();
            expect(version).toEqual(prodVersion);

            process.env.VERSION = `v${prodVersion}`;
            const version2 = await platform.getAppVersion();
            // v prefix removed
            expect(version2).toEqual(prodVersion);

            process.env.VERSION = `version not like semver`;
            const notSemverVersion = await platform.getAppVersion();
            expect(notSemverVersion).toEqual(`version not like semver`);
        });

        describe('pollForUpdate()', () => {
            it('should return not available and call showNoUpdate when current version matches most recent version', async () => {
                process.env.VERSION = prodVersion;
                setRequestMockImplementation(undefined, { status: 200}, prodVersion);
                const platform = new WebPlatform();

                const showUpdate = jest.fn();
                const showNoUpdate = jest.fn();
                const result = await platform.pollForUpdate(showUpdate, showNoUpdate);

                expect(result).toEqual({ status: UpdateCheckStatus.NotAvailable });
                expect(showUpdate).not.toHaveBeenCalled();
                expect(showNoUpdate).toHaveBeenCalled();
            });

            it('should strip v prefix from versions before comparing', async () => {
                process.env.VERSION = prodVersion;
                setRequestMockImplementation(undefined, { status: 200}, `v${prodVersion}`);
                const platform = new WebPlatform();

                const showUpdate = jest.fn();
                const showNoUpdate = jest.fn();
                const result = await platform.pollForUpdate(showUpdate, showNoUpdate);

                // versions only differ by v prefix, no update
                expect(result).toEqual({ status: UpdateCheckStatus.NotAvailable });
                expect(showUpdate).not.toHaveBeenCalled();
                expect(showNoUpdate).toHaveBeenCalled();
            });

            it('should return ready and call showUpdate when current version differs from most recent version', async () => {
                process.env.VERSION = '0.0.0'; // old version
                setRequestMockImplementation(undefined, { status: 200}, prodVersion);
                const platform = new WebPlatform();

                const showUpdate = jest.fn();
                const showNoUpdate = jest.fn();
                const result = await platform.pollForUpdate(showUpdate, showNoUpdate);

                expect(result).toEqual({ status: UpdateCheckStatus.Ready });
                expect(showUpdate).toHaveBeenCalledWith('0.0.0', prodVersion);
                expect(showNoUpdate).not.toHaveBeenCalled();
            });

            it('should return ready without showing update when user registered in last 24', async () => {
                process.env.VERSION = '0.0.0'; // old version
                jest.spyOn(MatrixClientPeg, 'userRegisteredWithinLastHours').mockReturnValue(true);
                setRequestMockImplementation(undefined, { status: 200}, prodVersion);
                const platform = new WebPlatform();

                const showUpdate = jest.fn();
                const showNoUpdate = jest.fn();
                const result = await platform.pollForUpdate(showUpdate, showNoUpdate);

                expect(result).toEqual({ status: UpdateCheckStatus.Ready });
                expect(showUpdate).not.toHaveBeenCalled();
                expect(showNoUpdate).not.toHaveBeenCalled();
            });

            it('should return error when version check fails', async () => {
                setRequestMockImplementation('oups');
                const platform = new WebPlatform();

                const showUpdate = jest.fn();
                const showNoUpdate = jest.fn();
                const result = await platform.pollForUpdate(showUpdate, showNoUpdate);

                expect(result).toEqual({ status: UpdateCheckStatus.Error, detail: 'Unknown Error' });
                expect(showUpdate).not.toHaveBeenCalled();
                expect(showNoUpdate).not.toHaveBeenCalled();
            });
        });
    });
});
